Improvement in hot-air furnaces



J. F. PEASEL` HOT-AIR FRNACE.

Patented July 1.0, 1877.

im E f 'UNITED STATES PATEIBISLQE.Tlll` JOHN F. PEASE, OF SYRAGUSE, NEWYORK.

IMPROVEMENT IN HOT-AIR FURNACES.

Specification forming part of Letters Patent No. 192,837, dated July 10,1877; application filed January 5, 1877.

To all whom it may concern Be it known that I, JOHN F. PEAsE, of Syl"-acuse, in the county of Onondaga and State of New York, have inventednew and useful Improvements in Hot-Air Furnaces, of which the following,takenl in connection with the accompanying drawings, is a full, clear,and exact description.

This invention relates to improvements in that class of hot-air furnacesin which the products of combustion are conveyed through a radiatorarranged around the exterior of the combustion-chamber or body of thefurnace; and it consists in a novel, simple, and cheap construction of aradiator, which is easily connected with a furnace, easily renewed,repaired, and cleaned, and which also greatly augments the heatingcapacity of the furnace without impairing its draft.

The invention is fully illustrated in the accompanying drawing, wherein-Figure l is a top view of a furnace with my improved radiator applied;Fig. 2, a rear view of same; Fig. 3, a front view, and Fig. 4 a verticalsection on line x m in Fig. l., l

Like letters indicate like parts in each figure.

R is the radiator, constructed of two segments of cylinders of differentdiameters, concentrically arranged side by side, united at the ends, andclosed at the top and bottom by a segment of an annular plate. It isisolated from the body of the furnace, and admits of a ready connectingor disconnecting with same. It communicates at the front with thecombustion-chamber c by horizontal dues a a at or near the sides of thefeed-door n, and

has the exit-ilus e at the rear.

For the purpose of further increasing the radiating-surface, and ofallowing free ingress for the products of combustion to the radiator,the radiator is provided with cylindric enlargements b b at the endswhere communicating with the combustion-chamber. By these enlargementsthe products of combustion are allowed to freely ascend, and caused tobe better distributed in their passage through the radiator.

o is an oval concavo-convex plate, provided with a thimble for theattachment ofthe eXitflue, and fitted to an enlarged opening in the rearof the radiator, thereby augmenting the exit and improving the draft.

The radiator, being free from partitions and other impediments, iseasily cleaned by inserting a broom through the exit at the rear, andsweeping the dust and ashes forward into the horizontal ilues a a, wherethey can be emptied by removing the covers d d on the outer ends of saidlues.

f is a shield or bridge over the inner end of the flues a a, extendingupward, so as to cause the products of combustion to rise `in thecombustion-chamber and retard the escape of the heat.

What I claim as my invention is l. The combination of the radiator R,constructed of two segments of cylinders of dif-` ferent diameters,arranged concentrically side by side, united at the ends, and closed atthe top and bottom by a segment of annular plate, the horizontal iues aa, and interior passages formed by bridges f, substantially as and for gthe purpose specilied.

2. The combination of the radiator R, constructed of two segments ofcylinders of different diameters, arranged concentrically side by side,and closed at the top and bottom by a segment of annular plate, theenlarged ends b b, horizontal ilues a a, and interior passages formed bybridges f, all constructed and combined substantially in the mannerdescribed and shown, for the purpose set forth.

In testimony whereof l have signed my name and affixed my seal in thepresence of two attesting witnesses, at Syracuse, in the county ofOnondaga and State of New York, this 29th day of December, 1876.

JOHN F. PEASE. [L. SJ

Witnesses:

JON. CUsr. A. LIME, EMIL BENDIXEN.

